Jovani 43623 Sequin Long High Slit Open Back Formal Prom Dress Amarra 89297 Floral Fit & Flare Prom Dress Cut Outs Slit Ruffle 000 Ivory Blue Print Sherri Hill Bow Cut Out Long Prom Dress 56593 How to add a slit where you dont have a seam. I had made a dress but wanted to add a slit to it once it was done, so didnt have a seam where I could add one easily, so this is the method I used!,